Home / 780,381.44-1,076,928.72-440,842.40

Finding the Fourth Proportional to 780,381.44, 1,076,928.72 and 440,842.40

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Solution

The fourth proportional to 780,381.44, 1,076,928.72 and 440,842.40 is: 608,363.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,381.44 : 1,076,928.72 = 440,842.40 : x
  2. Step 2: Convert to fraction form
    780,381.44/1,076,928.72 = 440,842.40/x
  3. Step 3: Cross multiply
    780,381.44x = 1,076,928.72 × 440,842.40
  4. Step 4: Simplify right side
    780,381.44x = 474,755,841,553.73
  5. Step 5: Solve for x
    x = 474,755,841,553.73/780,381.44
  6. Step 6: Final answer
    x = 608,363.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.